Loom for weaving thick and thin striped fabrics



Nov. 24, 1931. c. H. DRAPER 1,833,884

7 LOOM FOR WEAVING THICK AND THIN STRIPED FABRICS I Filed E6b.. 26, 19312 Sheets-Sheet 1 Fig.1.

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(Have H. Dmpev byfeww WaPW Affys.

Nov. 24, 1931. c. H. DRAPER 1,833,884

LOOM FOR WEAVING THICK AND THIN STRIPED FABRICS Filed Feb. 26, 1931 2Sheets-Sheet 2 \nvenTm'. more HDmper ATTys.

Patented Nov. 24, 1931 UNITE'DS'TATES PATENT OFFICE i CLARE H. DRAZEER,10F HOPEDALE, MASSACHUSETTS, ASSIGNOR T DBAPER CORPOB A- 1 TION, 0FHOPEDALE, MASSACHUSETTS, AYCOZRP ORATION OF MAINE LOQM non wmvme 'rnroxAND THIN STRIPEID- FA RICS Application filed 'Iebruary 26., 1931. SerialNo. 518,317.

This invention relates to a 100m operating to vary .the condensation ofthe filling in the cloth as .it is Woven so .as to produce thick andthin places transversely of the cloth and thereby give a transversestriped-effect.

The object of the invention is to provide means for effectingintermittently a rotary shift of the take-up roll in opposite directionsduring the weaving operation so as "to prodnce'the desired effect."

The object of the invention is further to provide means for effectingsuch a rotary shift of the take-up 'roll in opposite directions inregular -:a-lternation to a predetermined extent so as :to produce inregular alternation similar decreases and increases in the condensationofiathe filling.

The object of the invention is further to provide means forefi'ecting'such rotary shift of the take-up roll while at the :same timemaintaining a positive driving connection from the 'drivinghlement "tothe take-up roll.

These and other -obiectsaand features of the invention will appear morefully "in the accompanying description and drawings and will :beparticularly pointed out in the claims.

As the invention is applicable -'to various types of looms and as thegeneral construction and operation :of such flooms is well 30 known andfamiliar to those skilled :in the art, it :is only necessary here .toillustrate and describe those features of an ordinary "type of loom withwhich a preferred embodiment of the present invention is "concerned. Thepreferred embodiment of the invention illustrated makes IHSGI of much ofthe me hanism disclosed in (my pending application,

Serial 'No. 429,408, filed February 18, 1930.,

But this mechanism is here utilized for :se-' curing entirely differentresults.

Inthe drawings:

Fig. 1 is a front elevation partially broken away of a portion of a loomwith the preferred form of the invention embodied there- Fig. '2 is aview in elevation of a portion of the construction shown in Fig. 1looking toward the right of that figure.

' .Fig. 3 is :an enlarged detail chiefly in vertical cross section takentransversely of the driving shaft on the line 3-3 of Fig. 2;

Fig. 4 is a detail on :a larger scale incross section taken on :the line4.4 :of Fig; 2. i

The doom comprises the usual side frames of whichnaportionof :theleft-hand frame 1 is shown with the breast beam '2 extending therefromto the opposite side frame. A usual form of take up roll 3 is journailedin the side frames under the breast beam and usually presents aroughened surfalceto (grip the cloth which is wound on the cloth r01 1 4by frictional engagement with the take-up roll; A shaft '5 is jounnalledin a bearing bracket 6 supported on the bottom of. the frame and thisshaft has journalled thereon a gear A train of gearing Whichrmay The ofany suitable arrangement and indicated generallyat 8 extends from thegear 7 to :the

shaft 9 of the take-.rup roll so that any rotation imparted'in eitherdirection to the gear 7 will in turn be positively and definitelyimparted to the take np roll. But it will he understood that theparticular driving connections between the element? and the shaft 9 ofthe :ta'ke-up roll maybe of any suitable construction "so long as theyact to impart positively, directly, and" accurately the retation of thetake-up roll in either direction according 'to' the direction ofrotation of the element 7. i

The shaft 5 has keyed thereto a worm wheel 10 and this Worm Wheel mesheswith and is driven by-a worm 11 keyed to a shaft '12'jourmilled in thebearing bracket '6 and extend ingrearwardly in. the loom frame andpositively driven from one'of the usual -loom shafts. The shaft 5 hasalso keyed thereto at 13 abevelled gear 14. The shaft "5 with this gear14 constitutes a positively driven element which in this case is thedrivingelement for the take-up'roll. ,Butthe mea-nsby which the finaldriving element, or in this case the bevelled gear 14, is given apositive rotation may be of anyfsuitable form and construction andspecifically considered forms no part of the present invention. 7 i

- A driven element in the form of a bevelled gear 15 journalled in axialalignment with the driving element or bevelled gear 14 and 100 ispreferably for that purpose journalled on the shaft 5. This drivenelement 15 imparts a direct driving connection to the take-up roll andfor that purpose is preferably formed rigid or integral with the gear 7and thus acts through the train of gearing 8 to drive the take-up roll.

3 A differential system of gearing is illustrated including the bevelledgears 14 and 15 and comprises a cylindrical housing 16 rotatablecoaxially of the shaft 5 and provided with one or more intermediatebevelled gears 17 herein shown as three in number having their shafts 18journalled radially .in the housing and so arranged that the bevelledgears 17 mesh with both of the bevelled gears 14 and 15. i

- The outer cylindrical surface of the housing 16. is formed to presenta worm wheel 19 and this worm wheel 19 meshes with a worm 20 secured toan auxiliary or transverse shaft 21 journalled in portions 22 of thebearing bracket 6.

A gear 23 is secured to the auxiliary shaft. A bracket arm 24: dependingfrom one of the portions 22 of the bracket 6 presents a .bearing sleeve25 extending beneath and parallel with the auxiliary shaft 21. In thisbearing sleeve is journalled a lever; This lever comprises the pivotshaft 26, the rearwardly extending arm formed in the shape of a sectorgear 27 meshing with the gear 23 on the auxiliary shaft 21 and theforwardly extending arm 28. The arm constituting the sector 27 isadjustably secured to the shaft 26 by the set screw 29. A crank isformed on the driving shaft 5 and is here shown as a pin 30 formed on orsecured to a collar 31 in turn adjustably secured to the end of theshaft 5 as by the set screw 32. A pitman extends from the crank pin 30to the arm 28 of'the'lever and presents the required universalconnections for that purpose. As illustrated, this pitman comprises ablock 33 journalled on the crank pin 30 and'transversely journalled at34 in the bifurcated upper end of the link 35. This link at its lowerend is journalled in the bifurcated upper end of the block 36 on the pin37 extending parallel with the crank pin 30 and the block 36 j ournalledon the driving element, that is, the shaft 5 and bevelled gear 14,through tothe take-up roll. Thisis because the bevelled gear 1 1 isgeared through the intermediate gears 17 to the bevelled gear 18 whichis secured to the gear 7 and this gear 7 is in turn geared to thetake-up roll shaft. Consequently if the houstions. VVhen the take-uproll is thus relatively shifted in thetaking up direction, it is obviousthat the condensation of the filling in the cloth willbe decreased,producing a thin place, and, when the rotationis in the oppositedirection, the condensation of the filling will be increased, producinga thick place. Consequently by controlling the position of the housingand intermittently rotating it in opposite directions to a predeterminedextent, a variety of patterns may be produced in the cloth-by thevariations in the'condensa-tion of thefilling.

In the construction illustrated, this relative rotary shift of thetake-up roll with respect to the driving element is produced by rotatingthe housing alternately in opposite directions by means of theconnections extend.- ing to the driving shaft 5whichfhave beendescribed. In the case illustrated, the intermittent rotary shiftof thetake-up roll in opposite directions takes place in regular alternationand during equal periods of predetermined extent determined by the crankand sector gear mechanism extending from the shaft 5 to the auxiliaryshaft 21. It will also be seen that this rotary shift of the take-uproll relatively to the driving element in either direction isaccomplished without disconnecting from the take-up roll the means fordriving it so that there is no break at any timein the train ofpermanent connections extending between the driving element and thetake-up roll. I I 7 Having thus described the invention, what is claimedas new, and desired to be secured by Letters Patent, is: I

1. A loom comprising a take-up roll, means for driving the take-up rollin a direction to effect take-upQandmeans acting to give intermittentlyin oppositedirections rotary shift of the take-up roll relative to itsdriving means thereby to vary the condensation of the filling in thecloth.

2. A loom comprising a take-up roll, means for driving the take-up rollin a direction to effect take-up, and means acting to give in regularalternation in opposite directions a predetermined amount of rotaryshift of the take-up roll relative to its driving means to 1,833,884 i II 3 creases and increases in the condensation of the filling in thecloth.

3. A loom'comprising a take-up roll, means for driving the take-up rollin a direction to effect take-up, and means acting without disconnectingthe said driving means from the take-up roll to give intermittently inopposite directions rotary shift of the take-up roll relative to itsdriving means thereby to vary the condensation of the filling in thecloth.

4:. A loom comprising atake-up roll, means for driving the take-up rollin a direction to effect talre-up, means acting without discon nectingthe said driving means from the takeup roll to give in regularalternation in opposite directions a predetermined amount 'of rotaryshift of the takeup roll relative to its driving means to produce inregular alternation similar decreases and increases in the condensationof the filling in the cloth.

5.'A take-up mechanism for looms comprising a driving element, a take-uproll, a train of permanent connections between said driving element andtake-up roll, and means for moving one of said connectionsintermittently in opposite directions to effect rotary shift of thetake-up roll in opposite directions relative to the driving elementthereby to vary the condensation of the filling in the cloth.

6. A take-up mechanism for looms comprising a driving element, a take-uproll, a train of permanent connections between said driving element andtake-up roll, and means for moving one of said connections in regularalternation in opposite directions to effect a predetermined amount ofrotary shift of the take-up roll in opposite directions relative to thedriving element thereby to produce in regular alternation similardecreases and increases in the condensation of the filling in the cloth.f

i 7. A loom comprising a tal e-up roll, a driving element. a permanentpositive driving connection from the driving element to the take-uproll, and means acting intermittently to shift the rotary position ofthe take-up roll in opposite directions with respect to the drivingelement thereby to form thick and thin places transversely of the cloth.

,8. A loom comprising a take-up roll, a driving element, a permanentpositive driving connection from the driving element to the take-uproll, and means operated by the driving element acting intermittently toshift the rotary position of the take-up roll in opposite directionswith respect to the driving element thereby to form thick and thinplaces transversely of the cloth.

9. A loom comprising a take-up roll, a driving element, a differentialsystem of gearing between the driving element and the take-uproll fordriving the latter from the former to effect take-up, and means actingintermittently to rotate bodily in opposite:

directions-theintermediate element of the differential gearing therebyto shiftin opposite directions the rotary position of the tatablecoaxially with the shaft, an intermediategear journalled in the housingand meshing with the driving and driven gears, and means acting tocontrol the positionof the housing and intermittently rotate the housingin opposite directions thus to effect a take-up action of the cloth withpredeter- I mined variations in the condensation ofthe filling therein.

11. A loom comprising a shaft, means for positively driving the shaft, adriving gear secured to the shaft, a driven gear journalled in axialalignment with the shaft, a take-up roll, a gearing connection betweenthe takeup roll and the driven gear. a housing rotatable coa-xially withthe shaft, an intermediate gear journalled in the housing and meshingwith thedriving and driven gears, J

an auxiliary shaft, a gearing connection between the auxiliary shaft andhousing, and means for rotating the auxiliary shaft alternately inopposite directions thereby to 1 shift the rotary position of thetake-up roll relatively to the driving shaft and vary the condensationof the filling in the cloth.

12. A loom comprising a shaft; means for positively driving the shaft, adriving gear secured to the shaft, a driven gear journalled in axialalignment with the shaft, a takeup roll, a gearing connection betweenthe take-up roll and the driven gear, a housing rotatable coaxially withthe shaft, an intermediate gear journalled in the housingand a meshingwith the driving and driven gears, an-auxiliary shaft, a gearingconnection be- 7 tween the auxiliary shaft and housing, a crank operatedby the driving shaft and an oscillatory connection between the crank andthe auxiliary shaft whereby the crank acts to oscillate the auxiliaryshaft alternately in opposite directions and-thereby effects a variationin the condensation of the filling in the cloth. v

13. A loom comprising a shaft, means for ppsitively driving the shaft, adriving gear secured to the shaft, a driven gear journalled in axialalignment with the shaft, a takeup roll, a gearing connection betweenthe take up roll and the driven gear, a housing rotatable coaxially withthe shaft, an inter mediate gear journalled in the housing and meshingwith the driving and driven gears,

an auxiliary shaft,'a gearing connection be tween the auxiliary shaftand housing, a gear on the auxiliary shaft, a lever having one arm inthe form of a sector gear in en-- gagement With the gear on theauxiliary shaft, a crank on the drivingshaft, and a pitman connectionfrom the crank to the other arm of the said lever. In testimony whereof,I have si name to this specification.

gned my CLARE: H. DRAPER.

